The effect of polyimide fibre on the tribological properties of polytetrafluoroethylene
DOI:
https://doi.org/10.31891/2079-1372-2025-117-3-69-75Keywords:
polytetrafluoroethylene, polyimide fibre, volume percentage, linear wear intensity, friction coefficient, hardnessAbstract
The article investigates the effect of discrete polyimide fibre on the tribological properties of polytetrafluoroethylene under friction conditions without lubrication, using the “disk-pad” scheme. It was found that the introduction of 2.5-12.5 vol% filler contributes to a significant increase in the wear resistance of polytetrafluoroethylene, up to 370 times. At the same time, the friction coefficient increases slightly, reaching a maximum value at a fibre content of 7.5 vol%. The decrease in the linear wear intensity of polytetrafluoroethylene is due to an almost twofold increase in hardness. We can explain the improvement in wear resistance by the formation of strong intermolecular bonds at the “matrix-fibre” interface, increased structural uniformity, and the formation of a stable transfer film during friction. Morphological analysis of the friction surfaces confirmed a reduction in the intensity of damage for the filled composites. On the surface of pure polytetrafluoroethylene, traces of plastic deformation, numerous plowing grooves, and signs of micro-cutting were observed, indicating the prevalence of the adhesive-fatigue wear mechanism. In contrast, the composite surfaces are characterized by a smaller number and depth of defects, which suggests a reduced influence of the adhesive component of the friction force and a transition to a pseudo-elastic wear mechanism.For polymer composite materials with an effective fibre content of 7.5 vol%, a set of tribological tests was conducted to determine the critical values of sliding speed and load that affect the linear wear intensity
References
А.S. Kobets Application of polymer composites in the agricultural industry. Monograph. Dnipro: Zhurfond, 2022. 356 p.
O. Kabat, V. Sytar, K. Sukhyy Antifrictional polymer composites based on aromatic polyamide and carbon black. Chem. Chem. Technol. 2018. Vol.12, No.3. P. 326–330.
Kabat O.S., Sytar V.I., Yermachenok D.V., Davydov S.O., Heti K.V. Polymer composite materials for friction units of space and aviation equipment. System Design and Analysis of Aerospace Engineering. 2017. Vol. XXIII. P. 40–48.
Myshkin N.K., Pesetskii S.S., Grigoriev A.Ya. Polymer composites in tribology. VIII International scientific conferene «BALTTRIB 2015».Kaunas, 2015. P.152–1565.
K.V. Berladir; T.P. Hovorun, O.A. Bilous, S.V.Baranova The modeling of the composition and properties of functional materials based on polytetrafluoroethylene. Functional Materials. 2018. Vol.25, No2. P. 342–347.
O. Burya, Ye. Yeriomina, O. Lysenko, A. Konchits, A. Morozov, Polymer composites based on thermoplastic binders, Dnipro: Srednyak T. K. Press. 2019. 239 р.
K.V. Berladir, V.A. Sviderskiy Designing and examining polytetrafluoroethylene composites for tribotechnical purposes with activated ingredients. Eastern-European Journal of Eenterprise Technologies. 2016. Vol.84. No.6. P. 14–21.
O. Yeromenko, A.-M. Tomina, I. Rula Effect of discrete basalt fiber on operational properties of polytetrafluoroethylene. Problems of Tribology. 2022. Vol. 27. No. 4/106. P. 39–44.
J. Dong, C. Yin, W. Luo, et al. Synthesis of organ-soluble copolyimides by one-step polymerization and fabrication of high performance fibers. Journal of Materials Science. 2013. No.48 (21). P. 7594–7602.
X. Dai, F. Bao, L. Jiao, et al. High-performance polyimide copolymer fibers derived from 5-anino-2-(2-hydroxy-4-aminobenzene)-benzoxazole: preparation, structure and properties. Polymer. 2018. Vol.150. P. 254–266.
K.R. Voloshina, A.-M.V. Tomina, Yu.E. Hranitskyi The influence of polyamide fiber on the wear intensity of polytetrafluoroethylene. Comprehensive quality assurance of technological processes and systems (KZYATPS -2025): materials of the abstracts of the XV International Scientific and Practical Conference (Chernihiv, May 22–23, 2025): in 2 vols. / National University "Chernihiv Polytechnic" [et al.] ; editor: Prystupa Anatoliy Leonidovych [et al.]. – Chernihiv: NU "Chernihiv Polytechnic", 2025. Vol. 2. P.136.
O.I. Burya, S.V. Kalinichenko, A.-M.V. Tomina, I.I. Nachovniy The impact of organic tanlon fiber on performance indicators of polychlorotrifluoroethylene. Journal Problems of Tribology. 2019. Vol.92. No.2. P. 61–66.
Buria O.I., Tomina A.-M.V. Organoplastics of tribotechnical purpose. Prospects and priorities of research in science and technology: collective monograph. Riga, Latvia: «Baltija Publishing». 2020. Vol.2. P. 240–257.
M.A. Ibrahim, H. Çamur, M. Savaş, S.I. Abba. Optimization and prediction of tribological behaviour of filled polytetrafluoroethylene composites using Taguchi Deng and hybrid support vector regression models. Scientific Reports. 2022. Vol.12. No.1. P. 10393
S. Kolhe, A. Deshpande, K. Wangikar. Wear behavior of polytetrafluoroethylene composites: A review. In: Smart Technologies for Energy, Environment and Sustainable Development. 2019. Р. 571-584.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Problems of Tribology
This work is licensed under a Creative Commons Attribution 4.0 International License.
